Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C275/00—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
  • C07C275/28—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
  • C07C275/30—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton being further substituted by halogen atoms, or by nitro or nitroso groups
• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
  • A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
  • A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
  • A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
  • A01N47/30—Derivatives containing the group >N—CO—N aryl or >N—CS—N—aryl
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • C07C275/00—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
  • C07C275/44—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups doubly-bound to carbon atoms

Definitions

• This invention relates to chemical compounds useful in the control of pests, particularly insect pests, to compositions containing the compounds, and to methods of preparing the compounds.
• R is an alkenyloxy group; an alkoxy group optionally substituted by one or more phenyl radicals or atoms of fluorine, chlorine, bromine or iodine; a phenoxy group optionally substituted by one or more lower alkyl or lower alkoxy groups or atoms of fluorine, chlorine, bromine or iodine; an alkylthio group optionally substituted by one or more phenyl radicals; a phenylthio radical optionally substituted by one or more atoms of fluorine, chlorine, bromine or iodine, or lower alkyl, lower alkoxy, or lower haloalkyl radicals; or an amino radical optionally substituted by one or two alkyl radicals, each of which may optionally be substituted by one or more alkoxy radicals or phenyl radicals; and R 2 is a phenyl radical optionally substituted by one or more
• lower alkyl, lower alkoxy, and lower haloalkyl groups we mean groups in which the alkyl moiety contains from 1 to 6 carbon atoms.
• Examples of compounds according to the invention include those of the foregoing formula (I) in which the group R 2 is a 3,4-dichlorophenyl or 4-chloro-3-trifluoromethyl phenyl radical, and R 1 is an alkoxy group of 1 to 1 2 carbon atoms.
• E and Z forms may be obtained, or a mixture of the two.
• the isomers, having different physical properties, may be separated by physical processes known in the chemical art. Both isomers of a particular compound have biological activity, but the biological effects of the isomers may not be completely identical in every case.
• the compounds in Table I are mixtures of E and Z forms unless otherwise specified.
• the compounds of formula I may be used to combat and control infestations of insect pests particularly lepido- pterous and coleopterous insects.
• the insect pests which may be combated and controlled by the use of the invention compounds include those pests associated with agriculture (which term includes the growing of crops for food and fibre products, horticulture and animal husbandry), forestry, the storage of products of vegetable origin, such as fruit, grain timber, and also those pests associated with the transmission of diseases of man and animals.
• the compounds may be used to control mosquito larvae and the larvae of the common housefly.
• the compounds may also be effective in controlling infestations of Coleoptera and Diptera by causing the laying of infertile eggs.
• compositions which include in addition to the insecticidally active ingredient or ingredients of formula I suitable inert diluent or carrier materials, and/or surface active agents.
• the compositions may also comprise another pesticidal material, for example another insecticide or acaricide, or a fungicide, or may also comprise a insecticide synergist, such as for example dodecyl imidazole, safroxan, or piperonyl butoxide.
• compositions may be in the form of dusting powders wherein the active ingredient is mixed with a solid diluent or carrier, for example kaolin, bentonite, kieselguhr, or talc, or they may be in the form of granules, wherein the active ingredient is absorbed in a porous granular material for example pumice.
• a solid diluent or carrier for example kaolin, bentonite, kieselguhr, or talc
• granules wherein the active ingredient is absorbed in a porous granular material for example pumice.
• compositions may be in the form of liquid preparations to be used as dips or sprays, which are generally aqueous dispersions or emulsions of the active ingredient in the presence of one or more known wetting agents, dispersing agents or emulsifying agents (surface active agents).
• Wetting agents, dispersing agents and emulsifying agents may be of the cationic, anionic or non-ionic type.
• Suitable agents of the cationic type include, for example, quaternary ammonium compounds, for example,. cetyltrimethyl ammonium bromide.
• Suitable agents of the anionic type include, for example, soaps, salts of aliphatic monoesters or sulphuric acid, for example sodium lauryl sulphate, salts of sulphonated aromatic compounds, for example sodium dodecylbenzenesulphonate, sodium, calcium or ammonium lignosulphonate, butylnaphthalene sulphonate, and a mixture of the sodium salts of diisopropyl- and triisopropylnaphthalene sulphonates.
• Suitable agents of the non-ionic type include for example, the condensation products of ethylene oxide with fatty alcohols such as oleyl alcohol or cetyl alcohol, or with alkyl.phenols such as octyl phenol, nonyl phenol and octyl cresol.
• Other non-ionic agents are the partial esters derived from long chain fatty acids and hexitol anhydrides, the condensation products of the said partial esters with ethylene oxide, and the lecithins.
• compositions may be prepared by dissolving the active ingredient in a suitable solvent, for example, a ketonic solvent such as diacetone alcohol, or an aromatic solvent such as trimethylbenzene and adding the mixture so obtained to water which may contain one or more known wetting, dispersing or emulsifying agents.
• suitable organic solvents are dimethyl formamide, ethylene dichloride, isopropyl alcohol, propylene glycol and other glycols, diacetone alcohol, toluene, kerosene, white oil, methylnaphthalene, xylenes and trichloroethylene, N-methyl-2-pyrrolidone and tetrahydro furfuryl alcohol (THFA).
• compositions to be used as sprays may also be in the form of aerosols wherein the formulation is held in a container under pressure in the presence of a propellant such as fluorotrichloromethane or dichlorodifluoromethane.
• a propellant such as fluorotrichloromethane or dichlorodifluoromethane.
• the compositions which are to be used in the form of aqueous dispersions or emulsions are generally supplied in the form of a concentrate containing a high proportion of the active ingredient or ingredients, the said concentrate to be diluted with water before use. These concentrates are often required to withstand storage for prolonged periods and after such storage, to be capable of dilution with water to form aqueous preparations which remain homogeneous for a sufficient time to enable them to be applied by conventional spray equipment.
• the concentrates may contain lO-85% by weight of the active ingredient or ingredients. When diluted to form aqueous preparations, such preparations may contain varying amounts of the active ingredient depending
• an aqueous preparation containing between 0.0001% and 0.1% by weight of the active ingredient is particularly useful.
• compositions are applied to the pests, to the locus of the pests, to the habitat of the pests, or to growing plants liable to infestation by the pests, by any of the known means of applying pesticidal compositions, for example, by dusting or spraying.
• the rate of application will depend upon factors such as the insect species to be controlled but in general a rate of from 5 to 1000g per hectare will be appropriate.
• compositions of the invention are very toxic to a variety of insect pests, including, for example, the following:-
• Compounds of the invention wherein the group R 2 is an alkenyloxy, alkoxy, or phenoxy group may be prepared by reacting a 1,3,5-oxadiazine derivative (II) with the appropriate alkenol, alkanol, or phenol.
• Compounds according to the invention in which the group R 2 is an amino group or an amino group substituted by one or two alkyl groups may be prepared by reacting the appropriate 1,3,5-oxadiazine (II) with ammonia or with the appropriate mono- or di-alkylamine.
• the 1,3-,5-oxadiazine derivatives (II) may be prepared as described in German Offenlegungschrift no. 2732115.
• the reaction with the alkenol, alkanol, phenol, alkanethiol, thiophenol, ammonia, or amine may if desired be carried out in a solvent inert to theqreactants. It may be convenient to carry out the reaction by treating the oxadiazine with an excess of the other reactant as the solvent. The reaction may if desired be accelerated by heating.
• compounds in which R 2 is an alkoxy or alkenyloxy group may be prepared by the reaction scheme outlined below:
• the imidate ester (III), wherein R 1 is an alkenyloxy, or alkoxy groups is reacted with the appropriate isocyanate R NCO to give the compounds of the invention.
• the imidate esters and the isocyanates R 2NCO may be prepared by standard methods well known in the chemical art.
• Compounds wherein the group R 1 is an alkylthio group may also be prepared by the last foregoing reaction scheme.
• 2,6-Difluorobenzamide (1.56g) in methylene chloride was added to triethyloxonium fluoborate (1.9g) in methylene chloride and the mixture stirred for 24 hours. The solution was then washed three times with cold sodium carbonate solution and dried over sodium sulphate. The methylene chloride solution was evaporated to yield an oil. This was mixed with chloroform and the solution filtered from insoluble material. Evaporation of the chloroform gave the ethyl 2,6-difluorobenzimidate as a mobile oil.
• This Example illustrates the insecticidal activity of compounds according to the invention.
• the compounds of the invention were formulated for test by dissolving a sample of each compound in the minimum amount of a mixture of 1 part by volume of ethyl alcohol and 1 part by volume of acetone, and then diluting the solution so obtained with water to give a solution having a concentration of 1000 parts per million. These solutions were then used in tests on mustard beetle (Phaedon cochleariae) and cotton leaf worm (Spodoptera littoralis). These tests were carried out as follows
• Pots containing mustard cotyledons are sprayed to runoff with the spray solution described above.
• the sprayed foliage is fed to mustard beetle larvae (4th instar stage) kept in Petri dishes containing filter paper (10 larvae per dish). After 48 hours the filter paper is changed and the dead larvae counted. The larvae are fed again with a single unsprayed leaf and further mortality counts made at 6 and 12 days.
• the test is similar to that described for'the mustard beetle above, with the following differences : Cabbages are used as the test plants and 5 larvae instead of 10 are used. Mortality counts are made at 48 hours at which stage the filter paper is removed and the larvae fed on an untreated artificial diet. A further count is made at 6 days. Two replicates are used in all tests.
• a dash (-) means that no test was carried out.

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Life Sciences & Earth Sciences (AREA)
• Agronomy & Crop Science (AREA)
• Pest Control & Pesticides (AREA)
• Plant Pathology (AREA)
• Health & Medical Sciences (AREA)
• Engineering & Computer Science (AREA)
• Dentistry (AREA)
• General Health & Medical Sciences (AREA)
• Wood Science & Technology (AREA)
• Zoology (AREA)
• Environmental Sciences (AREA)
• Agricultural Chemicals And Associated Chemicals (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)

Applications Claiming Priority (2)

Publications (2)

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Country Status (13)

Cited By (6)

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Citations (1)

• 1979
  • 1979-05-18 GB GB7917352A patent/GB2025396A/en not_active Withdrawn
  • 1979-05-18 EP EP79300868A patent/EP0005944B1/de not_active Expired
  • 1979-05-18 JP JP54500768A patent/JPH0134984B2/ja not_active Expired
  • 1979-05-18 WO PCT/GB1979/000068 patent/WO1980000023A1/en unknown
  • 1979-05-18 DE DE7979300868T patent/DE2965026D1/de not_active Expired
  • 1979-05-28 ZA ZA792621A patent/ZA792621B/xx unknown
  • 1979-05-29 NZ NZ190602A patent/NZ190602A/xx unknown
  • 1979-05-31 AU AU47651/79A patent/AU530131B2/en not_active Ceased
  • 1979-06-01 ES ES481199A patent/ES481199A1/es not_active Expired
  • 1979-06-01 CA CA328,962A patent/CA1126287A/en not_active Expired
  • 1979-06-02 OA OA56823A patent/OA06270A/xx unknown
  • 1979-06-04 IL IL57464A patent/IL57464A/xx unknown
• 1980
  • 1980-01-02 DK DK1280A patent/DK1280A/da unknown

Patent Citations (1)

Non-Patent Citations (1)

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